During the winter semester of 1992/93 I taught for the first time the course Quantum Optics /at the University of Ulm, which was followed by part II in the summer semester of 1993. When I offered the course a second time the University was kind enough to financially support two diplorn students, Erwin Mayr and Daniel Krahmer, who had already taken this class in the previous year to transform my hand-written notes and sketches of drawings into a legible form.